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Methyl iodide → 5-Bromo-3-methyl-2-(3-trifluoromethoxy-phenyl)-3H-imidazole-4-carboxylic acid methyl ester

HRID 545361
ノート
印刷プレビュー

反応式

HRID 545361 の反応式
[Br:1][C:2]1[N:6]=[C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[C:9]([O:13][C:14]([F:17])([F:16])[F:15])[CH:8]=2)[N:4]([CH3:18])[C:3]=1[C:19]([OH:21])=[O:20].[C:22](=O)([O-])[O-].[K+].[K+].IC>CN(C=O)C>[CH3:22][O:20][C:19]([C:3]1[N:4]([CH3:18])[C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[C:9]([O:13][C:14]([F:17])([F:16])[F:15])[CH:8]=2)=[N:6][C:2]=1[Br:1])=[O:21]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 671331915-bromo-3-methyl-2-(3-trifluoromethoxy-phenyl)-3H-imidazole-4-carboxylic acid

生成物 1

HCID 671331955-Bromo-3-methyl-2-(3-trifluoromethoxy-phenyl)-3H-imidazole-4-carboxylic acid methyl ester収率 93.4%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

A stirred solution of 1.826 g (5.0 mmol) of 5-bromo-3-methyl-2-(3-trifluoromethoxy-phenyl)-3H-imidazole-4-carboxylic acid (example 72) in 20 ml of DMF was treated at RT with 2.073 g (15.0 mmol) of potassium carbonate, followed by addition of 0.62 ml=1.42 g (10.0 mmol) of iodomethane. After 70 hours, the reaction mixture was poured into crashed ice and extracted twice with Et2O; the organic phases were washed with water, dried over magnesium sulfate, filtered and evaporated. The residue was purified by flash column chromatography (n-heptane/CH2Cl2 1:0 to 0:1) to give 1.77 g (93%) of the title compound as light yellow oil. MS: 379.0 (MH+, 1Br).

後処理

  1. additionthe reaction mixture was poured
  2. extractionextracted twice with Et2O
  3. washthe organic phases were washed with water
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by flash column chromatography (n-heptane/CH2Cl2 1:0 to 0:1)

出典と根拠

ORDレコード
ord-75253d57e8b447a4bbb2e12f21408ff9
出典データセット
uspto-grants-2011_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07935707B2

反応ノート

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